Immunological studies in smallpox.
D000328:Adult; D000818:Animals; D006385:Hemagglutination Inhibition Tests; D006386:Hemagglutination Tests; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D009500:Neutralization Tests; D011817:Rabbits; D012899:Smallpox / Q000276:immunology*; D014611:Vaccination